Observation by Callum Potter: Abell 21 PN

Uploaded by

Callum Potter

Observer

Callum Potter

Observed

2025 Feb 24 - 23:18

Uploaded

2025 Feb 25 - 23:14

Objects

Abell 21

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Constellation

Gemini

Field centre

RA: 07^h28^m
Dec: +13°14'
Position angle: +11°00'

Field size

0°31' × 0°31'

Equipment

Seestar S50

Exposure

67x10s LP filter

Location

Rousay, Orkney

Target name

Medusa Nebula

Title

Abell 21 PN

About this image

Not as nice an image as Norman's - but interesting to see that Abell 21 is easily within the reach of the Seestar.

It's a pity the Seestar does not have a quick way to set up custom targets using Simbad or whatever (unless anyone knows differently?).

Exposure was quite short over a long time due to the wind causing a lot of dropouts.

Will have another go with the LP off if I get another clear night soon. SQM was 21.7 this night.

Files associated with this observation

Medusa_67x10sec_T18degC_2025-02-24_cpotter.jpg (941.6 kB)

Like this image

Simon Paul Davis, Mark Fairfax, Dominic Ford, Mike Greenhill-Hooper

Comments

Steve Knight, 2025 Feb 26 - 04:05 UTC

Nice image Callum. Agree, there are many many interesting objects not listed. If you search in Sky Atlas there is a My Favourites section where you can add objects using their RA & Dec.

Callum Potter, 2025 Feb 26 - 11:34 UTC

Thanks Steve - yes I am using the favourites - just the problem of entering the right coordinates correctly. I tried Simeis 147 the other night but found I had landed in the middle with no nebulosity visible. Next try will be with an offset to get to one of the brighter regions.

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